Use savanna client 0.3-rc3
Use savanna client 0.3-rc3

Change-Id: I680b317f6f639cc0fed8d308cd0d64e703aa4a98

esikachev/sahara-tests,esikachev/sahara-tests,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-scenario,openstack/sahara-tests,openstack/sahara-tests,openstack/sahara-scenario,openstack/sahara-tests,esikachev/sahara-tests